Santa Maria del Mar is a Gothic church located in Barcelona's Ribera district. It was built between 1329 and 1383 and is considered an icon of Catalan Gothic architecture due to its spacious interior, simplicity of design, and abundant natural light from its stained glass windows. The church has three naves with an octagonal bell tower and makes extensive use of geometry and the square as architectural motifs. It remains an important tourist attraction in Barcelona today.